33121041641 has 2 divisors, whose sum is σ = 33121041642. Its totient is φ = 33121041640.

The previous prime is 33121041593. The next prime is 33121041677. The reversal of 33121041641 is 14614012133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21169086016 + 11951955625 = 145496^2 + 109325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33121041641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33121041641.

It is not a weakly prime, because it can be changed into another prime (33121041691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560520820 + 16560520821.

It is an arithmetic number, because the mean of its divisors is an integer number (16560520821).

Almost surely, 2^33121041641 is an apocalyptic number.

It is an amenable number.

33121041641 is a deficient number, since it is larger than the sum of its proper divisors (1).

33121041641 is an equidigital number, since it uses as much as digits as its factorization.

33121041641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 33121041641 its reverse (14614012133), we get a palindrome (47735053774).

The spelling of 33121041641 in words is "thirty-three billion, one hundred twenty-one million, forty-one thousand, six hundred forty-one".